Reaction time (RT) is a very important factor in skilled performance. Precue is one of the effective factors on RT. The results of studies on this factor have Shown (1 reduction in RT as the Junction of precue ; hut the majority of these researches have been performed on aiming tasks. The present research as performed to lest the hypothesis that RT in a force production task is a function of precued parameters. A mixed 3-functional design was performed on 16 (8 male and 8 female) volunteers: non - athlete, right - handed students aged between 20 and 25. The subjects performed a total of 2400 trials over 5 sessions on successive days (4 blocks out of 120 block-trials per session) under different numbers of precue (0-3) using parameter precuing apparatus. This task required the production of defined isometric force (3 or 6 kg) toward inside or outside, with tight or left upper limb acting as quickly and accurately as possible after displaying precue(s) and stimulus. The subjects’ RT in different levels of independent variables was analyzed using 3-factor experiment (number of precued parameters gender session) with repeated measure ments on 2 of these factors (number of precued parameters and session). The results indicated a significant reduction in RT with an increase in the number of precued parameters (P<0.05). The main effects of gender and session were not significant (P>0.05), but all of the interactions were significant (P<0.05).
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